cutting threads on lathe

I am a small lighting manufacturer with one CNC mill running and now
considering building or purchasing a lathe to thread 12" long 3/8"OD
1/8 IPS tubing. Could be thin wall steel, brass or aluminum.

Questions are:

1. With a lathe is CNC the way to go for threading and cutting?
2. Is a small cnc lathe with a auto feeder a realistic possibility?

What are my other options for threading the tubing? I have seen
something called an Automat ? What is it?

David.Munson@...